How Do You Spell CAPGARONNITE?

Capgaronnite is a mineral belonging to the vanadate group, specifically classified as a hydrated copper aluminum vanadate phosphate. It was first discovered in the Cap Garonne mine located in Var, France, thus the origin of its name.

As a member of the vanadate group, capgaronnite is composed of aluminum, copper, vanadium, phosphate, and oxygen. Its chemical formula is typically represented as Cu2Al(VO4)(OH)3·2H2O. It crystallizes in the orthorhombic system, meaning it displays a three-dimensional lattice structure with three unequal perpendicular axes.

Capgaronnite is characterized by its vibrant turquoise-blue color, often mixed with green or even bluish-white. It has a vitreous to pearly luster, especially when polished. Its transparent to translucent nature allows light to penetrate through, giving it a distinct visual appeal. It exhibits a perfect cleavage in one direction, and its fracture is conchoidal, meaning it breaks into smooth, curved surfaces.

This mineral is commonly found in oxidized copper deposits, where it forms as a secondary mineral derived from the alteration of primary copper minerals. Its occurrence is often associated with other vanadium-bearing minerals, such as descloizite and mottramite.

Though capgaronnite is relatively rare and not widely used commercially, it holds considerable value among collectors and enthusiasts of mineralogy due to its striking color and the uncommon combination of elements it contains.